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In this paper, the containment control problem in second-order multi-agent systems for static and dynamic leaders under directed and undirected topologies are studied. We propose the periodic intermittent containment control algorithm, which both reduces the load of updating rates of controller and cuts down the working time of the controller in each sampling interval. Some necessary and sufficient...
Modern mechanical engineering systems are primarily designed to perform a specific system process in an optimal manner. For this purpose, they use control systems that monitor and influence the process with the help of sensors and actuators. Changing control values or (physical) disturbances are recorded and considered by the control systems. Problems arise whenever the disturbances are not physical,...
This paper defined a unified architecture of IoT system, on which IoT node model, virtual things, the basic service of things and overall hierarchical model of services had been described. IoT nodes must be connected directly to Internet and provide basic services of things in this architecture, and started from the base services which were compatible with Internet applications system of SOA, built...
In this paper, a guaranteed cost controller is designed for a mixed-flow two-spool turbofan engine to ensure its dynamical performance under networked conditions. The linear state-space engine model is first identified, based on which a networked engine control (NEC) system is established where the transmission delay and the packet dropout are considered simultaneously. Then the networked guaranteed...
This paper proposes a constant altitude flight system using two dimensional laser range finder with mirrors. Recently, unmanned aerial vehicles (UAVs) are expected to perform in the inspection of deteriorated infrastructures such as bridges and tunnels. In the most of such operations, UAVs should be navigated and controlled in GPS-denied environment. In this paper, we apply two dimensional laser range...
IMOCA is a model-based architecture model dedicated to embedded process control systems in disturbed environment. These systems depend on various parameters which are difficult to set because they are bound to environment changes. In this paper we propose to extend IMOCA with the meta-model ImocaGen for managing the aspects of the code generation. ImocaGen allows to target multiple platforms and different...
As modern unmanned aerial systems (UAS) continue to expand the frontiers of automation, new challenges to security and thus its safety are emerging. It is now difficult to completely secure modern UAS platforms due to their openness and increasing complexity. We present the VirtualDrone Framework, a software architecture that enables an attack-resilient control of modern UAS. It allows the system...
It is known that 75% of international freight is through maritime transportation. Indeed, as international trade increases, ports face the pressure to improve their infrastructure in order to maintain their operations and respond to market demands. Given such high level of competition, ports ought to leverage their resources efficiently and effectively, which has resulted in increased automation capabilities...
The model-based event-triggered strategies have been developed as an alternate for Zero-Order-Hold (ZOH)- based event triggered scheme in continuous-time for multi-agent systems (MAS). However, traditional event-triggered schemes need the knowledge of system dynamics whereas model-based schemes are sensitive to model uncertainties. Therefore, in this paper, a novel distributed event-triggered consensus...
In this paper, the problem of queue in convenient stores is considered. We propose a low cost automatic queue length monitoring system by using an Internet-of-Things (IoT) platform. This system can detect the length of queue and the number of people that enqueue and leave the queue. If the length of queue is critical, the system will alert to staff via LINE Notify. Experimental results indicate that...
The paper deals with hydraulic ash removal (HAR) at TTP. A new design of hydrocyclones with variable geometry was proposed. An automation control system for hydrocyclones with variable geometry was proposed and practically implemented in this paper. The parameters of the proposed system operation were determined. The description for controls and process equipment is given. A general block diagram...
In this paper, a fault diagnosis method is proposed based on component-wise expectation maximization algorithm and k-means algorithm, and it is applied to diagnosing the fault of the satellite attitude determination control system. First, Gaussian mixture model and the its traditional parameter estimation algorithm are reviewed. The component-wise expectation-maximization algorithm is used to estimate...
The navigation accuracy could be improved in the rotation inertial navigation system (INS) compared to strapdown INS. However, the effectiveness of the rotation modulation could be decreased owing to the carrier motion, which is necessary to be insulated. This study analyses the motion influence on the accuracy for the single-axis rotation inertial navigation system (RINS) and designs a control implementation...
In this paper, multirotor unmanned aerial vehicle (UAV) stabilization system is developed. The UAV dynamic model of pitch angle is considered. The model is developed on propulsion system identification results and takes into account noizy signal from integrated in the crystal gyroscope and acelerometer (GY-521). The model represents the dynamics of 450 class quadcopter. In the paper, stabilization...
In this paper, we design and implement an intuitive manipulation method for smart home system, called “over-the-Air Manipulation System.” It is used to improve the operation inconvenience of smart home system. We exploit the two components of smart glasses, display screen and camera, to capture the user's control gestures and display the information of smart home appliance. Moreover, the system will...
In accordance with the current trend of Industry 4.0, we propose in this paper a newly designed hardware (HW) and software (SW) cooperative control system for a die-cutting machine tool with flexible punching functionality. Different from conventional PCL-based die-cutting machine tools where most cutting functionalities are pre-programmed in the hardware circuits, the proposed PC-based system integrates...
The problem of variable structure guaranteed cost control for discrete uncertain networked systems with time delay has been considered in this paper. Based on the Lyapunov stability theorem, by introducing a discrete compensator, a novel sliding mode manifold that can compensate time delay has been designed. Then, by using linear matrix inequalities approach, a guaranteed cost controller is designed...
These days most of aquaculture industries using water management system which is operated manually, in this case wasting high quantity of water and spending more money for maintenance purpose. From this point of view we proposed new aquaculture system with electrical valve, that system is called a vertical aquarium management system. The purpose of the electrical valve is to regulate the flow and...
In this paper, a model-based event-triggered control law is adopted to reduce communication traffic in networked control systems. In this model-based control system, a nominal model of system plant is used to estimate the system state between two sampling instants. By simultaneously considering bounded system noise and bounded network delay, a mixed event-triggering mechanism is proposed to stabilize...
Ensuring cyber security of smart grid based on supervisory control and data acquisition using information and communications technology has been becoming a major challenge. Especially, a replay attack is a dangerous cyber attack affecting integrity and authorization. The goal of this paper is to detect replay attack that is one of cyber attacks on the sensors of a control system. We propose a detecting...
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